I've been starting my own seeds for the past couple of years, but I keep running into a mold problem. I'm pretty sure it's due to the humidity levels. What are some effective ways to prevent excessive humidity when starting seeds? Also, would using hydrogen peroxide help keep mold at bay?
2 Answers
A simple trick is to sprinkle some cinnamon on your soil. It's natural and has anti-fungal properties, which can help prevent mold.
Make sure to check the type of soil you're using. Sometimes, mold can occur if the seeds are too old or not viable. I usually have the best results with a seed starting mix like Jiffy, combined with a heat mat set at around 80°F and humidity domes to keep the top layer of soil moist without drowning it.